Volkswagen Passat 1995 Official Factory Repair Manual page 1622

Diagnostic Trouble Code (DTC) table
Scan Tool Possible cause
Display
00533 2234
Idle speed Idle Air Control valve
control (N71) sticking or dirty
Adaption limit
exceeded
Adaption limit Unmeasured air (leak)
not reached between Mass Air Flow
sensor (G70) and
engine
00535 2141
First knock Engine Control Module
control (J220) knock control
faulty
Impossible
signal
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Corrective steps
Check N71 Page 01-31
Test Mode
Check intake system for leaks (unmeasured
air)
Vehicles with EGR, check EGR valve:
Repair Manual, 2.8 Liter VR6 2V Engine
Mechanical, Engine Code(s): AAA, Repair
Group 26; removing and installing parts of
exhaust system; exhaust gas recirculation
system
Replace J220, Page 24-8
Page 9 of 23
01-15
, Output Diagnostic
, item 2
6/12/2004